The Digestive System Of The Human Body

When choosing between what system to write about, I thought the digestive system would be a good topic because food is probably one of my favorite things, not only cause it tastes good but because it gives me the energy to do all the things I need to do throughout the day. We talked in class about how you should always get the nutrients from food and never from supplements, which I’ve always tried to do. So, what is the digestive system? The digestive system is an assortment of organs that performs the process of digestion. The process of digestion involves food, containing nutrients, which is eaten and broken down into different segments. The digestive system also works with additional important systems in the body such as the circulatory system and the excretory system. The circulatory system receives all the absorbed nutrients through your body, and your excretory system filters compounds from the blood stream and collects them in urine. This whole system is designed distinctively, with the ultimate goal of turning food into the energy that you need to survive. The digestive system starts with the mouth and ends with the anus. (Studios, A. R, n.d)

The multidimensional function of the liver makes it prone to various diseases. These diseases interfere with liver function and leads to its derangement. However, the liver has a great reserve capacity to regenerate and it only produces symptoms after extensive damage. The liver diseases are categorized into chronic and acute disease. Acute disease occur rapidly and exist for a short period while chronic liver disease involves a process of progressive destruction and regeneration of liver parenchyma leading to fibrosis and cirrhosis (Crawford 2007). The burden of chronic liver disease is on the increase in both developed as well as developed countries.

The stomach related framework is comprised of the gastrointestinal (GI) tract—likewise called the stomach related tract—and the liver, pancreas, and gallbladder. The GI tract is a progression of empty organs participated in a long, bending tube from the mouth to the butt. The empty organs that make up the GI tract are the mouth, throat, stomach, small digestive system, internal organ—which incorporates the rectum—and butt. Sustenance enters the mouth and goes to the rear-end through the empty organs of the GI tract. The liver, pancreas, and gallbladder are the strong organs of the stomach related framework. The stomach related framework enables the body to process nourishment.

The mouth, also referred to as the oral cavity, is the entryway into the digestive tract. The opening is formed by the lips, which guide food into and contain food in the mouth. The palate forms the roof of the mouth and separates the mouth from the nasal passages. The uvula is important in sealing off the nasal passages during swallowing. The tongue forms the floor of the mouth and guides food within the mouth during chewing and swallowing. The major taste buds are also located on the tongue. (Sherwood 2013)

Most of us think that the process that takes place in our stomach after we eat a meal it’s very easy and simple when the truth is that it’s a very complex process. The process of digestion starts even with the simple thought of food, after that the body starts preparing the stomach for the food that is about to be eaten. The food goes then through our mouth into our stomach, where is digested and dumped into the intestines to be thrown away. In order for our stomach to digest the food completely, it has to go through three different stages and that’s where the process of digestion occurs. The first stage it’s called cephalic phase, in this stage or phase, the brain perceives any sight, smell or taste of food, sending impulses to the brainstem

The digestive systems organs work together to help the body turn food into nutrients and energy. Food passes through the gastrointestinal tract (GI tract). The GI tract is made up of the oral cavity, pharynx, esophagus, stomach, small intestines, and large intestines. There are accessory organs that do not have food pass through them but those organs help with the digestive system. They include the teeth, tongue, salivary glands, liver, gallbladder, and pancreas. The six major functions need to happen in the digestive system and they are ingestion, secretion, mixing and movement, digestion, absorption, and excretion. (Taylor)

The digestive system is one of the most overlooked systems in the human body. Although most people cannot sense the system at work like they do when they breathe in air or feel their heart beat, it still continues to deliver nutrients throughout the systems. The digestion system is responsible for nourishing the human body with the energy necessary to stay healthy and getting rid of the unnecessary materials (Marieb 1989).

Expanding across the upper section of the abdomen behind the lower ribs is the second largest organ in the human body. The liver has a multitude of functions, one of which is discharging chemicals that are pertinent for the survival of other parts of the body (Medicine.net, 2014). The liver also functions as a storage unit as it breaks down and detoxifies substances including hormones and insulin produced by the body. The liver also filters and breaks down medications, and narcotic substances ingested by consumption (Medicine.net, 2014).

First steps in the digestive system take place in the mouth, including our lips without them food and saliva would just fall out and it would be very disgusting. As the teeth cut, tear, and grind the food down into small, teeny-tiny pieces so that it can fit down the throat, which then will continue throughout the digestive system. Without our teeth we would simply choke on all of our food constantly and would not survive. There are several types of teeth in the ordinary human mouth,usually in a full set of permanent teeth there are in total thirty-two teeth. The different types of teeth do different things, Like the incisors that are adapted for cutting. Like when you are chewing let 's say some chicken these help to cut the chicken up into smaller bits.The eye-teeth or Canines are used mostly for piercing the food. The premolars and Molars have a broader shape and are used to grind and really break up the chicken that you are eating. Some people without teeth often get their food blended or eat soft foods that can go down quickly and easily.

The importance of the liver is imperative to the whole body due to its many active roles. It is critical for the survival of the human body. One of the purposes for the liver is to regenerate damaged or dead tissue. When injury from viral infection, chemical toxicity, or autoimmune inflammation damage or kill liver cells; the remaining cells can compensate by doubling their metabolic function, however, if liver injury or cell loss exceeds its ability to compensate, the liver functions will diminish. When blood enters the liver, it is rich in glucose. Hepatocytes absorb much of this glucose and pack it away until when it can quickly be released as hormone insulin

The most common reason for needing a liver transplant, in both adults and adolescents, is acute liver failure (ALF), which is defined by Maryam Moini as “the rapid onset of liver dysfunction characterized by mental deterioration and coagulopathy in a patient without pre-existing liver disease”(1). Acute liver failure is a rare condition which occurs in between 1 and 8 per 1 million people annually (1). This is most commonly caused by infection,

The liver is the body 's largest solid organ. Receives about 1.5 liters of blood per minute and is involved in three important vital functions essential for our body: the purification, synthesis and storage. The liver recovers and transforms many toxic to render them harmless before disposal. Destroys red blood cells and white blood cell aging and certain bacteria in the blood. Destroy the waste produced by the body naturally, like ammonia, as also those who consume alcohol.

The digestive system is an organ system within animals, it’s primary purpose is to break food down into nutrients, which can be absorbed into the body to provide energy and expel the remaining waste as faeces and urine. The gastrointestinal (GI) tract consists of the pharynx, oesophagus, stomach, small intestines and the large intestines all of which play a vital role in helping the body digest food and remove waste. Food moves through the GI tract via peristalsis. Peristalsis is the contraction of the smooth muscles wall along the digestive tract which drives food into various compartments of the GI tract. Peristalsis is initiated once food enters the oesophagus, food is then transported to the stomach, peristalsis then continues in the small intestines where most digestion and absorption of nutrients into the blood takes place. Peristalsis ends at the large intestines, this is where majority of water and some vitamins are absorbed from the remaining waste material (Tortora & Derrickson, 2013).

The digestive system is a very important but complex system. It is made up of main and accessory organs, the main organs are the mouth, pharynx, esophagus, stomach, small intestine, large intestine, rectum, and anus. The accessory organs are teeth, tongue, salivary glands, liver, gallbladder, pancreas and appendix (Thibodeau and Patton's, 2012). Both, main and accessory organs have specific roles and functions which allow digestion to happen efficiently. In order for the digestive system to make nutrients available to each cell of the body, the system uses various mechanisms. The prime mechanisms of the digestive system are ingestion, digestion, motility, secretion, absorption, elimination and regulation (Thibodeau and Patton's, 2012).

The digestive system comprises of multiple organs like the mouth, which consists of the salivary glands, saliva, tongue and epiglottis; the Pharynx, Oesophagus, Diaphragm, Stomach, Spleen, Liver, Pancreas and the Lower gastrointestinal tract which includes the small and large intestine and the caecum. The major role of this system like it suggests is to digest food. It digests and provides nutrients to the body and passes on the waste to the excretory system to safely pass it out of the body. The Mouth breaks down the food into small components which are then accordingly absorbed and assimilated into the body. The salivary glands secrete saliva which also helps in the production of bolus which makes the task easier and it is then swallowed by the oesophagus and passed right down into the stomach. The saliva contains a catalytic enzyme called amylase which starts working on the food in the mouth itself and digestion is also helped due to the mastication of the food by the teeth and muscular contractions of the peristalsis.